Matter

Introduction to matter in the both languages (hindi and English) 

Some basic about matter and theirs States

It is a demo session what i conduct in this lecture  

Matter 

It is 1st chapter of class 9 science book in ncrt 

So i just tell something about this it a basic lecture 

chemistry, matter is any substance that has mass and takes up space by having volume.^[1] All everyday objects that can be touched are ultimately composed of atoms, which are made up of interacting subatomic particles, and in everyday as well as scientific usage, "matter" generally includes atoms and anything made up of them, and any particles (or combination of particles) that act as if they have both rest mass and volume. However it does not include massless particles such as photons, or other energy phenomena or waves such as light or heat.^{[1]: 21 [2]} Matter exists in various states (also known as phases). These include classical everyday phases such as solid, liquid, and gas – for example water exists as ice, liquid water, and gaseous steam – but other states are possible, including plasma, Bose–Einstein condensates, fermionic condensates, and quark–gluon plasma.^[3]